Bremont MBIII Specification sheet

MBIII
TECHNICAL NOTES

MBIII
TECHNICAL NOTES
Bremont Watch Company would
like to congratulate you most
sincerely on your purchase of a
Bremont timepiece.
Our timepieces have been
developed over several years to
cater for those that demand more
out of their mechanical watch. Our
aim has always been to produce
beautifully engineered timepieces
of exceptional quality that will last
several lifetimes, and ones that feel
particularly special when placed on
the wrist.
GB

Minute hand
Date indicator
Setting crown (I, II & III)
Second hand
Hour hand
24 hour hand (GMT)
Roto-Click®bezel crown
1
1
2
3
4
5
6
7
USING THE SETTING CROWN (pOSITIONS I, II & III)
WaTCH FEaTURES
I Normal running of watch and hand winding
II Rapid correction of date and 24 hour hand
III Position for setting the time with stop second and correction
of the date at every passing of midnight
Do not use the rapid date change function between 20:00 and
03:00 as this may damage the date change mechanism
I
II III
2
3
4
5
6
7

MBIII
AUTOMATIC CHRONOMETER
Your Bremont watch shows you the time in hours, minutes and seconds,
and the date. The mechanical movement with automatic winding has
a free-swinging rotor that keeps the mainspring wound via the motion
of your wrist. The movement in your MBIII has 21 jewels, runs at 28,800
bph and has a 42-hour power reserve once fully wound. The watch is
water resistant to 100m (10ATM) and the dial is protected by a dual anti-
reflective sapphire crystal that is retained securely in the case.
To ensure that this rather special watch continues to run beautifully for
years to come you must follow a few important operating instructions...
WINdING THE WaTCH
Your MBIII can be wound from crown position Iby rotating the crown in
a clockwise motion. The movement will automatically start with just a
few revolutions of the rotor, however it is better to wind the movement
fully with 30-40 revolutions of the crown. By doing this you will achieve
maximum accuracy and have a power reserve of 42-hours, even when the
watch is not on your wrist.
CHaNGING THE STRap
REMOVING A STRAP
Use the end of your watch tool to
carefully lever the spring bar out
of the lug.
FITTING A STRAP
Place one end of the spring bar
into the hole in the lug and use the
end of the watch tool to lever the
other end into position.

SETTING THE daTE
You can adjust the date by pulling out the crown to position II. You will
now be able to change the date by rotating the crown anti-clockwise.
Do not change the date between 20:00 and 03:00
SETTING THE TIME
Pull the crown out to position III, this will stop the movement, you can
now position the minute hand exactly. To start the second hand, push the
crown back to position I. When setting the time, it is worth noting that
the date change always takes place at mid-night (00:00). If this change has
already taken place at 12:00 noon, you must move the hands forward by 12
hours. Ensure that the crown is pushed back in after setting the watch.
USING THE ROTO-ClICk® BEzEl
Your MBIII is fitted with an internally rotating Roto-Click®bezel with minute
calibration. The bezel can be moved, both in a clockwise and anti-clockwise
direction using the bezel crown positioned at 4 o’clock. To use the timing
function, rotate the bezel until the red triangle marker is in line with the
minute hand, the elapsed time can now be measured and read using the
minute hand against the minute and hour markers on the dial ring.
USING THE 24 HOUR HaNd
The 24 hour hand allows the wearer to tell the time in an additional time
zone. Before setting the 24 hour hand ensure that the local time is set on
the watch first. To set the 24 hour hand, pull the crown out to position
II, this will not stop the movement from running. Whilst the crown is in
position II, rotate the crown clockwise to set the 24 hour hand to the 24
hour markers on the dial ring. For example, if you set the watch to 1pm
local time and your second location is 5 hours ahead, you would set the
24 hour hand at 18 hours.
CHRONOMETER TESTING
Your Bremont watch is chronometer tested and accompanied by a
performance certificate issued by the ‘Controle Officiel Suisse des
Chronometeres’ (COSC) to show that the mechanical movement has
passed all of the rigorous precision tests - a necessity of the chronometer
designation.
Remember to complete and return the COSC registration card to
Bremont to register your watch and receive your certicate.
The chronometer certification, which takes 15 days to complete over
several different temperature ranges and watch positions, means that
the average daily variation rate will be between -4 and +6 seconds. With